MBR (Membrane Bioreactor) device capable of washing membrane without shutdown
By backwashing the MBR membrane module with a rod ultrasonic generator in the MBR reactor, the problem of membrane module being susceptible to contamination and frequent shutdown and cleaning is solved, and the long-term continuous operation of the membrane module and efficient filtration and purification effect are achieved, extending the membrane service life.
Patent Information
- Application Number
- CN202420422649.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-05
- Publication Date
- 2025-03-25
- Estimated Expiration
- 2034-03-05
AI Technical Summary
During the working process, the membrane components of the existing MBR reactors are easily contaminated, resulting in a decrease in membrane flux. They must be shut down regularly for cleaning. The operation is complicated and manual operation is difficult. Especially when treating wastewater containing calcium and magnesium ions, frequent chemical cleaning leads to a shortening of the membrane life and a higher failure rate.
The rod-type ultrasonic generator is used to back-flush the MBR membrane module in the MBR membrane pool. Vibration is generated by the vibrating rod to cause turbulence and vibration, and vibration is transmitted through the vibration shrapnel, making it difficult for the surface of the membrane module to form dirt, and maintain the filtration and purification effect of the membrane module working for a long time.
The MBR membrane module is realized to operate continuously in various wastewater environments, and can maintain efficient filtration and purification effect without shutting down, reduce the frequency of chemical cleaning, extend the membrane service life, and improve the backwashing work efficiency.
Smart Images
Figure CN222665587U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of wastewater treatment technology, and in particular to an MBR reactor device that does not require shutdown for membrane cleaning. Background Art
[0002] A membrane biological reactor (MBR) is a wastewater treatment device that uses microfiltration or ultrafiltration membranes instead of secondary sedimentation tanks for solid-liquid separation of sludge. It achieves water purification through the organic combination of membrane separation technology and the activated sludge process. However, during operation, the membrane modules of an MBR reactor are susceptible to fouling, especially scaling and sludge fouling, which reduces membrane flux. Therefore, it is necessary to periodically shut down the reactor for online water or air rinsing and periodically perform offline chemical cleaning. The disadvantages of existing cleaning technologies include: complex membrane cleaning design procedures, high difficulty in manual operation, and a high probability of error. Especially when treating wastewater containing calcium and magnesium ions, frequent chemical cleaning leads to shortened membrane life and increased failure rate. Utility Model Content
[0003] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes an MBR reactor device that eliminates the need for downtime membrane cleaning.
[0004] The technical solution adopted by this utility model to solve its technical problem is as follows: An MBR reactor device that does not require shutdown for membrane cleaning is provided, comprising an MBR membrane tank having a cavity; an MBR membrane module having a filter membrane outlet end, the MBR membrane module being installed in the MBR membrane tank via an MBR membrane frame; and an ultrasonic generator, the ultrasonic generator including a rod-type ultrasonic generator, the rod-type ultrasonic generator including a vibrating rod, and a vibration transmission spring being disposed between the vibrating rod and the MBR membrane frame.
[0005] According to the MBR reactor device for membrane backwashing without shutdown provided by this utility model, the design of using a rod-type ultrasonic generator to backwash the MBR membrane module in the MBR membrane tank has at least the following technical effects: the vibrating rod of the rod-type ultrasonic generator generates vibration, causing violent turbulence and vibration in the water, and the vibration of the vibrating rod is transmitted to the MBR membrane module in the MBR membrane frame through the vibration transmission spring, making it difficult for dirt to form on the surface of the MBR membrane module, thus maintaining the filtration and purification effect of the MBR membrane module for long-term operation without shutdown.
[0006] In some preferred embodiments of this utility model, the rod-type ultrasonic generator is disposed on the side of the MBR membrane frame.
[0007] In some preferred embodiments of this utility model, the vibrating rod extends in a vertical direction, and a plurality of the vibration transmission springs are distributed on the vibrating rod and connected to the MBR membrane frame.
[0008] In some preferred embodiments of this utility model, a bottom ultrasonic generator is provided at the bottom of the MBR membrane frame, and a gap is left between the lower side of the MBR membrane frame, the lower side of the bottom ultrasonic generator and the bottom wall of the MBR membrane tank.
[0009] In some preferred embodiments of this utility model, the bottom ultrasonic generator is a disc-type ultrasonic generator, which includes a generator sealing shell and an ultrasonic transducer is disposed inside the generator sealing shell.
[0010] In some preferred embodiments of this utility model, a level gauge is provided on the MBR membrane tank to detect the liquid level in the MBR membrane tank.
[0011] In some preferred embodiments of this utility model, the MBR membrane tank is provided with an overflow port, and the overflow port is connected to an overflow pipe that connects to a buffer container.
[0012] In some preferred embodiments of this utility model, an aeration device is provided in the MBR membrane tank. The aeration device includes a main air duct, a branch air duct is provided on the main air duct, and a microporous aeration disc is provided on the air outlet of the branch air duct. The microporous aeration disc has a plurality of micropores.
[0013] In some preferred embodiments of this utility model, a negative pressure collection chamber is provided inside the MBR membrane frame, the upper side of the MBR membrane module corresponding to the filter membrane outlet is connected to the negative pressure collection chamber, the lower side of the MBR membrane module is sealed, the negative pressure collection chamber is provided with an outlet, and the outlet is connected to a negative pressure suction pump through a pipe.
[0014] In some preferred embodiments of this utility model, a pressure transmitter and an electromagnetic flow meter are provided on the pipeline. The pressure transmitter is used to detect the filtration pressure of the MBR membrane module, and the electromagnetic flow meter is used to detect the flow rate in the pipeline.
[0015] The beneficial effects of the utility model are:
[0016] 1. An efficient and convenient MBR reactor device that generates ultrasonic waves through an ultrasonic generator, enabling MBR membrane modules to operate continuously in various wastewater environments without shutdown and without affecting membrane flux;
[0017] 2. The vibration of the ultrasonic vibrator's vibrating rod causes water to flow turbulently and vibrate. Combined with the vibration transmission spring, this vibration causes continuous vibration on the surface of the microfiltration or ultrafiltration membrane of the MBR membrane module. This ensures that calcium and magnesium ions and attached sludge or organic matter cannot accumulate and form scale on the membrane without the ultrasonic vibrator needing to operate at high power. This achieves operating conditions that do not require backwashing and do not affect membrane flux, greatly reducing the frequency of chemical cleaning and extending the membrane life of the MBR membrane module.
[0018] 3. The rod-type ultrasonic generator on the side of the MBR membrane module works in conjunction with the disc-type ultrasonic generator on the bottom to improve the backwashing efficiency of the MBR membrane module.
[0019] 4. The design of installing a level gauge above the MBR membrane tank can monitor the reactor level in real time and transmit the signal to the controller to form an interlock with the negative pressure suction pump. High and low protection levels are set. Once the level exceeds the upper limit, a continuous buzzer alarm will sound to remind the staff to stop the water intake at the front end. At the same time, excess water will enter the external buffer tank through the overflow port for temporary storage. When the level is lower than the lower limit, the negative pressure suction pump will automatically stop working, and when it is lower than the very low limit, the ultrasonic generator will automatically stop working to ensure safe operation.
[0020] 5. The design of installing a pressure transmitter on the negative pressure suction pipeline monitors pressure changes in real time and forms a signal interlock with the ultrasonic generator through the controller. When the negative pressure is too high, the controller adjusts the ultrasonic vibration intensity to enhance the cleaning ability of the membrane.
[0021] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description
[0022] Additional aspects and advantages of this invention will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:
[0023] Figure 1 This is a front view of the MBR reactor device for membrane cleaning without shutdown according to this utility model;
[0024] Figure 2 This is a top view of the position of the MBR membrane frame in this utility model;
[0025] Figure 3 This is a schematic diagram of the structure of the rod-type ultrasonic generator in this utility model;
[0026] Figure 4 This is a schematic diagram of the structure of the disc-type ultrasonic generator of this utility model;
[0027] Figure 5 This is a schematic diagram of the structure of the MBR membrane module in this utility model;
[0028] Figure 6 This is a schematic diagram of the connection structure between the MBR membrane module and the negative pressure collection chamber in this utility model;
[0029] Figure 7 This is a schematic diagram of the structure of the MBR membrane tank in this utility model;
[0030] Figure 8 This is a schematic diagram of the aeration device in this utility model.
[0031] Figure label:
[0032] MBR membrane tank 100, anti-corrosion outer layer 110, heat insulation middle layer 120, fiberglass inner layer 130, level gauge 140, overflow port 150; MBR membrane module 200, water filter chamber 210; MBR membrane frame 300, negative pressure collection chamber 310, outlet flange 311; ultrasonic generator 400, rod-type ultrasonic generator 410, vibrating rod 411, vibration transmission spring 412, disc-type ultrasonic generator 420, generator sealing shell 421, ultrasonic transducer 422; pipeline 500, negative pressure suction pump 510, pressure transmitter 520, electromagnetic flowmeter 530; aeration device 600, main air duct 610, branch air duct 620, microporous aeration disc 630, aeration air inlet device 640; automatic controller 700. Detailed Implementation
[0033] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.
[0034] In the description of the present invention, it should be understood that descriptions involving orientations, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on the present invention.
[0035] In the description of this utility model, "multiple" means two or more, and "greater than," "less than," "exceeding," etc., are understood to exclude the stated number. The use of "first" and "second" in the description is merely for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly specifying the number of indicated technical features or their sequential relationship.
[0036] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.
[0037] Figure 1 This is a front view of one embodiment of the present invention, with reference to... Figure 1 One embodiment of this utility model provides an MBR reactor device that does not require shutdown for membrane cleaning, which is responsible for wastewater treatment while ensuring that the membrane module can operate continuously without shutdown and without affecting membrane flux.
[0038] Furthermore, the MBR reactor device of this utility model includes an MBR membrane tank 100, which has a cavity, and the wastewater to be purified is injected into the MBR membrane tank 100.
[0039] Furthermore, refer to Figure 1 , Figure 2 The MBR reactor device of this utility model also includes an MBR membrane module 200, which has a filter membrane outlet end. The MBR membrane module 200, as the main structure of the MBR reactor device, is responsible for filtering and purifying wastewater. The filtered purified water is discharged from the filter membrane outlet end. The MBR membrane module 200 is installed inside the MBR membrane tank 100 via an MBR membrane frame 300, which serves as the fixed installation structure for the MBR membrane module 200.
[0040] Furthermore, the MBR reactor device of this invention also includes an ultrasonic generator 400, which performs backwashing on the MBR membrane module 200 using ultrasonic waves. (See reference...) Figure 1 , Figure 2 , Figure 3 The ultrasonic generator 400 includes a rod-type ultrasonic generator 410, which includes a vibrating rod 411. A vibration transmission spring 412 is disposed between the vibrating rod 411 and the MBR membrane frame 300.
[0041] In practical work, refer to Figure 1The wastewater to be purified is in the MBR membrane tank 100. The MBR membrane module 200 in the MBR membrane tank 100 is responsible for filtration and purification. The vibrating rod 411 of the ultrasonic generator 400 generates vibration, causing intense turbulence and vibration in the water of the MBR membrane tank 100, thereby removing membrane fouling from the MBR membrane module 200. This vibration is transmitted to the MBR membrane frame 300 through the vibration transmission spring 412, and then to the MBR membrane module 200 in the MBR membrane frame 300, further making it difficult for fouling to form on the surface of the MBR membrane module 200. In this way, the MBR reactor device of this invention can achieve continuous operation without shutdown, continuously backwashing the MBR membrane module 200, ensuring the membrane flux of the MBR membrane module 200, and thus maintaining the filtration and purification effect of the MBR membrane module 200 for a long time.
[0042] Some embodiments, refer to Figure 1 , Figure 2 The rod-type ultrasonic generator 410 is positioned on the side of the MBR membrane frame 300. The side of the MBR membrane frame 300 is more suitable for the installation of the rod-type ultrasonic generator 410, and the installation of the rod-type ultrasonic generator 410 on the side of the MBR membrane frame 300 can better ensure that the ultrasonic vibration of the MBR membrane frame 300 is transmitted more evenly to the position of the MBR membrane module 200.
[0043] In some embodiments, the rod-type ultrasonic generator 410 is connected to the MBR membrane tank 100 or the MBR membrane frame 300 via a support structure to achieve fixed installation of the rod-type ultrasonic generator 410, while ensuring that the vibration generated by the rod-type ultrasonic generator 410 is not excessively transmitted to the wall of the MBR membrane tank 100.
[0044] In some embodiments, the vibrating rod 411 extends vertically, and a plurality of vibration transmission springs 412 are distributed on the vibrating rod 411 and connected to the MBR membrane frame 300, so that the vibration generated by the vibrating rod 411 can be more evenly distributed at various positions of the MBR membrane module 200 through the multiple vibration transmission springs 412.
[0045] Some embodiments, refer to Figure 1 , Figure 4 The bottom of the MBR membrane holder 300 is equipped with a bottom ultrasonic generator, which works in conjunction with the side rod-type ultrasonic generator 410 to more efficiently backwash the MBR membrane module 200 of the MBR membrane holder 300. A gap is left between the lower side of the MBR membrane holder 300, the lower side of the bottom ultrasonic generator, and the bottom wall of the MBR membrane tank 100 to ensure that the vibration generated by the bottom ultrasonic generator is more concentratedly transmitted to the MBR membrane module 200 of the MBR membrane holder 300.
[0046] Some embodiments, refer to Figure 4The bottom ultrasonic generator is a disc-type ultrasonic generator 420, which includes a generator sealing housing 421 and an ultrasonic transducer 422 disposed inside the generator sealing housing 421. The design of the disc-type ultrasonic generator 420 is more suitable for the backwashing operation at the bottom of the MBR membrane module 200. The ultrasonic transducer 422 generates ultrasonic vibrations, which are transmitted to the position of the MBR membrane module 200 through the generator sealing housing 421 and the MBR membrane frame 300.
[0047] In some embodiments, the disc ultrasonic generator 420 is connected to the MBR membrane tank 100 or the MBR membrane frame 300 via a support structure to achieve fixed installation of the disc ultrasonic generator 420, while ensuring that the vibration generated by the disc ultrasonic generator 420 is not excessively transmitted to the wall of the MBR membrane tank 100.
[0048] Some embodiments, refer to Figure 1 A level gauge 140 is installed on the MBR membrane tank 100 to detect the liquid level inside the MBR membrane tank 100, so as to monitor the liquid level of the MBR membrane tank 100 in real time. Once the liquid level is lower than the ultrasonic generator 400 and the preset protection liquid level of the MBR membrane module 200 in the MBR membrane tank 100, the level gauge 140 sends a signal to stop the water pumping device of the MBR reactor device of this utility model from pumping water.
[0049] Some embodiments, refer to Figure 7 The MBR membrane tank 100 consists of, from the outside in, an anti-corrosion outer layer 110, an insulation middle layer 120, and a fiberglass inner layer 130. The anti-corrosion outer layer 110 protects the outer layer of the MBR membrane tank 100 from corrosion. The insulation middle layer 120 ensures that the temperature inside the MBR membrane tank 100 is within a reasonable range, ensuring that the microorganisms in the activated sludge can maintain their activity. The fiberglass inner layer 130 is better suited to the wastewater conditions, preventing corrosion of the inner layer of the MBR membrane tank 100.
[0050] In this embodiment, optionally, the anti-corrosion outer layer 110 is a carbon steel plate, and the surface of the carbon steel plate is coated with anti-corrosion paint.
[0051] In some embodiments, the MBR membrane tank 100 may be containerized or reinforced concrete.
[0052] Some embodiments, refer to Figure 1 The MBR membrane tank 100 is equipped with an overflow port 150. The overflow port 150 is connected to an overflow pipe that leads to a buffer container. Once the liquid level of the MBR membrane tank 100 is too high and an alarm is triggered, even if the staff does not react in time, the wastewater of the MBR membrane tank 100 can overflow into the buffer container for temporary storage through the overflow port 150.
[0053] Some embodiments, refer to Figure 1 , Figure 5The MBR membrane module 200 consists of several hollow flat sheet membranes or curtain-shaped hollow tubular membranes. The MBR membrane module 200 has cavities as water filtration chambers 210, which can ensure the filtration effect of the MBR membrane module 200.
[0054] In some embodiments, the MBR membrane frame 300 is connected to the side wall or bottom wall of the MBR membrane tank 100.
[0055] In this embodiment, optionally, the MBR membrane holder 300 is connected to the bottom wall of the MBR membrane tank 100 via support legs.
[0056] Some embodiments, refer to Figure 1 , Figure 6 The MBR membrane frame 300 contains a negative pressure collection chamber 310. The upper side of the MBR membrane module 200, corresponding to the filter membrane outlet, is connected to the negative pressure collection chamber 310. The lower side of the MBR membrane module 200 is sealed. The negative pressure collection chamber 310 has an outlet, which is connected to a negative pressure suction pump 510 via a pipe 500. This effectively integrates the entire top of the MBR membrane module 200 into the negative pressure collection chamber 310. The filter water chamber 210 inside the MBR membrane module 200 communicates with the negative pressure collection chamber 310 via the filter membrane outlet. The negative pressure suction pump 510 can then be used as a suction device to draw water, causing wastewater to pass sequentially through the filter membrane surface of the MBR membrane module 200, the filter water chamber 210, and the negative pressure collection chamber 310 before being discharged by the negative pressure suction pump 510. This improves the filtration efficiency of the MBR membrane module 200.
[0057] In this embodiment, optionally, the outlet of the negative pressure collection chamber 310 is connected to the pipe 500 through the outlet flange 311, which facilitates the disassembly and assembly of the pipe 500 and the negative pressure collection chamber 310.
[0058] Some embodiments, refer to Figure 1A pressure transmitter 520 and an electromagnetic flowmeter 530 are installed on the pipeline 500, enabling the ultrasonic generator 400 of the MBR reactor device of this invention to automatically adjust the ultrasonic intensity. The pressure transmitter 520 detects the fluid pressure (suction generated by the negative pressure pump 510) in the pipeline 500 to monitor the filtration pressure difference of the MBR membrane module 200 in real time. Under normal pressure, the negative pressure pump 510 generates a negative pressure in the filter chamber of the MBR membrane module 200 upon startup, allowing water to pass through the MBR membrane module 200. Therefore, the pressure transmitter 520 only needs to measure the pressure of this negative pressure to monitor the filtration pressure difference of the MBR membrane module 200. The pressure transmitter 520 and the ultrasonic generator 400 are interlocked. When the filtration pressure of the MBR membrane module 200 exceeds a set upper limit, the ultrasonic generator 400 automatically increases the ultrasonic intensity. After the filtration pressure of the MBR membrane module 200 returns to normal, the ultrasonic generator 400 can switch to low-intensity operation. High-intensity ultrasonic treatment addresses the issue of scaling that still occurs with low-intensity ultrasonic treatment. This ensures efficient use of electricity and allows the MBR reactor device of this invention to operate continuously without interruption. The electromagnetic flowmeter 530 detects the flow rate within the pipeline 500. The electromagnetic flowmeter 530 is interlocked with the variable frequency pump, and in conjunction with the automatic controller 700, automatically adjusts the pump frequency to stabilize the effluent flow rate at the required value.
[0059] In some embodiments, biochemical aeration of activated sludge and membrane separation filtration of MBR membrane module 200 are carried out simultaneously in MBR membrane tank 100.
[0060] In some embodiments, the MBR membrane tank 100 is divided into a biochemical aeration tank area and an MBR membrane tank area, which are separated by a partition.
[0061] Some embodiments, refer to Figure 1 , Figure 8 An aeration device 600 is installed inside the MBR membrane tank 100. The aeration device 600 includes a main air duct 610, with one or more rows of branch air ducts 620 installed on the main air duct 610. Microporous aeration discs 630, each having a number of micropores, are installed at the air outlets of the branch air ducts 620. The main air duct 610 is connected to an aeration air inlet device 640. The aeration air inlet device 640 injects air into the main air duct 610, and the air passes through the branch air ducts 620 and exits through the micropores of the microporous aeration discs 630, thus supplying dissolved oxygen required for the biochemical degradation process of the activated sludge. This design ensures a more uniform distribution of dissolved oxygen within the MBR membrane tank 100.
[0062] In this embodiment, the aeration air intake device 640 may optionally be an air compressor or a blower.
[0063] In the description of this specification, references to terms such as "some embodiments" or "as one might imagine" indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.
[0064] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and purpose of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.
Claims
1. An MBR reactor device without stopping for membrane washing, characterized in that: include: An MBR membrane tank (100), wherein the MBR membrane tank (100) has a cavity; An MBR membrane assembly (200), wherein the MBR membrane assembly (200) has a filter membrane water outlet end, and the MBR membrane assembly (200) is installed in the MBR membrane pool (100) via an MBR membrane frame (300); An ultrasonic generator (400), wherein the ultrasonic generator (400) comprises a rod-type ultrasonic generator (410), wherein the rod-type ultrasonic generator (410) comprises a vibrating rod (411), and a vibration-transmitting spring (412) is arranged between the vibrating rod (411) and the MBR membrane frame (300).
2. The MBR reactor device without stopping for membrane washing according to claim 1, characterized in that: The rod-type ultrasonic generator (410) is arranged at the side of the MBR membrane frame (300).
3. The MBR reactor device without stopping for membrane washing according to claim 2, characterized in that: The vibration rod (411) extends in a vertical direction, and a plurality of vibration-transmitting springs (412) are distributed on the vibration rod (411) and connected to the MBR membrane frame (300).
4. A MBR reactor device without stopping for membrane washing according to claim 1 or 2, characterized in that: A bottom ultrasonic generator is provided at the bottom of the MBR membrane frame (300), and a gap is left between the lower side of the MBR membrane frame (300), the lower side of the bottom ultrasonic generator and the bottom wall of the MBR membrane pool (100).
5. The MBR reactor device without stopping for membrane washing according to claim 4, characterized in that: The bottom ultrasonic generator is a disk-type ultrasonic generator (420), and the disk-type ultrasonic generator (420) comprises a generator sealing shell (421), and an ultrasonic vibrator (422) is arranged inside the generator sealing shell (421).
6. The MBR reactor device without stopping for membrane washing according to claim 1, characterized in that: The MBR membrane pool (100) is provided with a liquid level meter (140) for detecting the liquid level in the MBR membrane pool (100).
7. The MBR reactor device without stopping for membrane washing according to claim 1, characterized in that: The MBR membrane pool (100) is provided with an overflow port (150), and the overflow port (150) is externally connected to an overflow pipe and communicated with a buffer container.
8. The MBR reactor device without stopping for membrane washing according to claim 1, characterized in that: An aeration device (600) is arranged in the MBR membrane pool (100), and the aeration device (600) comprises a main air duct (610), a branch air duct (620) is arranged on the main air duct (610), and a microporous aeration disk (630) is arranged on the air outlet of the branch air duct (620), and the microporous aeration disk (630) has a plurality of micropores.
9. The MBR reactor device without stopping for membrane washing according to claim 1, characterized in that: A negative pressure collection chamber (310) is arranged in the MBR membrane frame (300); the upper side of the MBR membrane assembly (200) corresponding to the water outlet end of the filter membrane is connected to the negative pressure collection chamber (310); the lower side of the MBR membrane assembly (200) is sealed; the negative pressure collection chamber (310) is provided with a water outlet, and the water outlet is connected to the negative pressure suction pump (510) through a pipeline (500).
10. The MBR reactor device without stopping for membrane washing according to claim 9, characterized in that: The pipeline (500) is provided with a pressure transmitter (520) and an electromagnetic flowmeter (530), wherein the pressure transmitter (520) is used to detect the filtration pressure of the MBR membrane assembly (200), and the electromagnetic flowmeter (530) is used to detect the flow condition in the pipeline (500).